Metal nailing strip



May 13, 1930.

w. H. ELSTON METAL NAILING STRIP Filed Aug. 1929 Patented May 13,1930

UN TE" wILnIaMn. ntsronor namarrfag onto j V i r METAL'N L N isal??? I IApplication filed Au gust 3.1929. S eria1 No. 3l3 339.

This invention relates to a nailing strip of that type adaptedto beembedded in a. concretestructure with a portlon exposedto receive nailswhereby flooring or the like.

5 may be fastened in place. Heretofore it has been the practice to usewoodstrips for this purpose but these soon rot or are otherwise renderedinefficient.

' nailing strip which can be readily'embedded in the concrete and, whenthus positioned, will not deteriorate because of moisture, this beingdue to the fact that air is free to circulatethrough the'strip,

1 It is another object to provide the strip any point to which it mightbe driven intothe strip. V

A still further object 1s to provide av debe used asreadily as nails.-

it-h the foregoing and other objects in view which will appearv as thedescription proceeds, the invention resides in the combination andarrangement of parts and in the details of construction hereinafterdescribed and claimed, it being understood that changes in the preciseembodiment ofthe'invention herein disclosed may be made 'withinthe scopeof what is claimed without departing from the spiritof the invention. 7

In the accompanying drawing the preferred form of the invention has beenshown. In said, drawings, 1 Figure 1 is a sectionthrough the structureconstituting the present. invention, the said strip being shownembedded'ina concrete 'nailingstrip is made-integral with the 'side 3andis normally extended close to the rolled It is an object of thepresent invention to. provide an all-metalagainst the top of thenailingstrip. vice of this character in which screws may structure witha layer of wood fastened therereference, 1 designatefithe bottom of thenailing strip from which are extended upwardly convergingfiat sides 2and 3,"the side 2 having an outwardlyrolled edge etwhereby it isreinforced longitudinally. v The topilof .the.

edge 4. This; top 5. is formed with'parallel slits 6 that'dividethetopinto narrow-resilientfingers aZthe-free edges of which arepreferablytapered to form biting edg'es as indicated; at

sheet ofjinetahthis metal being of a resilient nature and,";ifdesired-,being galvanized so as J to resist the action of moisture. 4 1'Inpracticethe strip is placed in the conis poured at thesides thereofso that the top of the concrete will befiush with the narrow top of the.strip as shown particularly in Fig ure 1. The strip of wood or thelikeindicatedat S to be fastened onthe concrete C is The entir'estrip,including the bottom 1, walls 2 and 3, and top 5,'is formed in asingle.crete form and the concrete, indicated at G,

placed in position and a barbed nail N is drive en downwardly throughthe strip S and The nail will come against one of the fingers 7 anddepressit until the edge 8 thereofcomes into engagement with the sideofthe nail whereuponlit will bite thereinto and hold the nail againstwithdrawal. Obviously, the nail can be driven'as far as desiredand' willbe held securely by the finger engaging it.

gInstead .of using nails, screws can be used and these will be engagedand heldby the fingers in the same manner as the nails.

will constitute a deflector fol-guiding a nail or the like into thestrip provided to receive While this structure has been described asdesigned primarilylfor use in fastening floor ing to concrete surfaces,it is to be understood that it can be usedwhereverstrips of material aretoobe attached to the eXposed face of a'concrete structure. As the sides2 and 3 converge within the concrete,,the strip will be held securely,,anchored. 7 Those fingers "not depressed'by fastening means will serveto" old t exwalls 2 and?) pr p y Stewed;

By providing the outturned edge 4 the same I H T r 7 1,758,150

apart so that the strip will not become loosened in the concrete. H 7

What is claimed is: V r 1. An all-metal nailing stri having convergingsides, and aseries of ngers integral Withone of the sidesancllnormallybridging the space therebetween, anyone ofsaidfingers beingadapted to qbe shifted into the. strip by aninserted fastening deviceandtoengage 10 and hold said device. y Y V 2. A nailing strip'for'niedof a single piece of resilient sheet metal bent tOPlfQVidG a bot j tomand converging sides, and a plurality of y closely-lyingresilient-fingers integ'ralwith one ofthe sides and normally bridgingthe space'between the sides td constitute spacing elements; any one ofsaidfingers being dey priessibleby an inserted fastening" device and Iconstitnting'means forengagingand'holding said device against- IWithdrawal fromthe i 3; A nailing strip formed in a single piece ofresilient sheet metal bent to provide a base, 7 converging sides, and atop normally bridgi-ng the-ispaeebetween the sides, said top being 7separate from one of thesideslbut integral U with the othersideandhaving a plurality of slits dividing the top into separately depressiblefingers, said fingers cooperating-With the upper portion of the opposedside to con-r stitnte fastener gripp ngmea-nsf Intestimony that I claimthe foregoing as my ownyI have hereto afiixed my signature.

ILLIAM H. ELsToN; 1

